LATIN DICTIONARYLexicon Latīnum
English → Latin

“synonymous” in Latin

The English word synonymous itself goes back to Latin synōnymos, through synōnymus.

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

synonymous
idem declarans: idem significans: quod idem declarat, significat, or valet: quo idem intelligi potest (☞ Cic., Fin., 3, 4, 14; Quint., 10, 1, 7): cognominatus (συνώνυμος; e.g., verba; a sure reading, Cic., Partit. 15, 53). Some expressions have the property that they are synonymous with several words, sunt alia hujus naturae, ut idem pluribus vocibus declarent.

Quick answer

What is the Latin word for synonymous?
The usual Latin words for “synonymous” are significō, valeō, cognōminō; also verbum, partiō. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.